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Catalogue  : Vaillant Spares  : Vaillant Thermocouples  : Vaillant 171125 Thermocouple

Vaillant 171125 Thermocouple

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Order Code: 019100

Vaillant 171125 Thermocouple

A thermocouple is a safety device that stops unburnt gas from building up within the appliance when the pilot light is out. One end if fitted within or just above the pilot flame, the opposite end is fitted to a volt sensor that operates the gas valve. When the pilot end detects a flame a small current is sent to the valve, notifying it to remain open. When there is no signal, the valve remains closed.
Price:
£14.53 ex VAT £17.44 inc VAT
Availability: Out of Stock